Island



(No Model.)

0. H. FULLER. MANUFACTURE OF JEWELBRS FINDINGS.

No. 550,960. Patented Dec. 10, 1895.

ANDREW B GRAHAMJHOTO LITHD.WA5H|NGTOMDC,

UNITED STATES PATENT OFFICE.

CHARLES H. FULLER, OF PAWTUCKET, RHODE ISLAND.

MANUFACTURE OF JEWELERS FINDINGS.

SPECIFICATION forming part of Letters Patent No. 550,960, dated December 10, 1895.

Application filed February 1, 1895. Serial No. 536 ,993. (No model.)

To all whom it may concern.-

Be it known that I, CHARLES H. FULLER, a citizen of the United States, residing at Paw tucket, in the county of Providence and State of Rhode Island, have invented certain new and useful Improvements in the Manufacture of Jewelers Findings; and I do declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanyingdrawings, and to the letters of reference marked thereon, which form a part of this specification.

My invention relates to cup-joints for pinjewelry in which the sides of the cup are indented with a spherical indentation which forms the bearing for the pin; and it consists, essentially, of an improvement upon the devices set forth in Letters Patent of the United States numbered 286,601 and 323,927, granted October 16, 1883, and August 7, 1885, respectively.

In the cup-joint described insaid patents and now in common use the pin, it is true, is held in place by an indentation made in the sides of the cup; but this indentation is not made until after the cup has been attached to the pin front, and it then requires special machinery or tools to effect the indentation.

The purpose of my invention is to provide a cup-joint to which the pin may be attached without the aid of special tools and in which the indentation is of a spherical form and made by the same operation by which the cup itself is made.

The accompanying drawings disclose my invention, Figure 1 being a vertical section of the cup; Fig. 2, a horizontal section taken through the pivotal points and showing the cup open ready to receive the eye of the pin; Fig. 3, a vertical section with pin in place, and Fig. 4 a side view of the complete article of jewelry.

Like parts are referred to by the same letters throughout.

A is the pin front, which is cast, stamped, or rolled from a solid bar or rod of metal and which has the pivotal points i formed on the inner sides of the prongs R S at the time that the prongs are shaped. These prongs are adapted to be closed upon that end of the pin P having the eye formed upon it, as shown in Fig. 3, and when closed the pivotal points enter the eye of the pin and hold it securely in position and yet free to be moved at its In the cups heretofore used the making of the indentation was a separate process executed after the cup had been soldered to the pin front. By my invention the indentations are made by the same process by which the cup itself is made and at the same time, thus saving one process in the manufacture.

Again, the making of said indentations in the cups heretofore used is an operation of considerable delicacy and calling for proportional skill, and in practice many pins are spoiled by the indentations being made too close to the pin front, thus causing the pin to bind, while by my device the indentations are absolutely uniform in location, each cup being the exact duplicate of every other.

Lastly, in the cups now used the indentations are and must be made by special tools and the process is necessarily a slow one. WVith my invention a simple nip with common pliers or a light tap with a hammer does the work, and the pin is complete. A much better pin at a reduced cost of manufacture is the result.

What I claim is A U shaped malleable cup joint formed from a single piece, and provided with the pivotal points 'i, stamped up from its sides and projecting inwardly, the cup having its sides flared upwardly from its bottom, thereby separating the pivotal points sufficiently to In testimony whereof I aifix my signature allow the eye of the pin to be inserted bein presence of two Witnesses.

tween them; combined with a pin having an eye formed 011 one end, and into which eye CHARLES H. FULLER. the points are made to catch when the sides are Vitnesses closed upon the pin; and a base upon which HENRY H. SHELDON,

cup is mounted, substantially as shown. JAMES RILEY. 

